Предмет: Математика, автор: amaleka

Посажено 10 кустов черной смородины,что составляет 50% от числа посаженных кустов красной смородины.Сколько кустов красной смородины посажено? Пожалуйста напишите обратную задачу с условиями прошуууууууууу

Ответы

Автор ответа: Raimy417

10 кустов=50%,то есть половина.

Естественно,100%(кол-во кустов красной смородины)=10•2=20(кустов красной смородины было посажено

ответ:было посажено 20 кустов красной смородины.

Красной смородины-20 кустов

Черной-?,на 50% меньше чем красной.

Ответ:черной смородины-10 кустов

Автор ответа: kosmostel237

Ответ: Посажено 5 кустов кр.с.

Пошаговое объяснение:

Дано:

Посажено-10 к. черной см.

50% сост. от числа кр.см.

Ск-ко посажено кустов кр.см.?

Решение:

10 кустов черной смородины- это 100% , из них 50% составляет от числа красной смородины. Находим ответ с помощью пропорций:

10:100=х:50 (можно записать в виде дроби)

Потом 100•х=10•50

100х=500

х=500:100

х=5

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Открыть текст в отдельной вкладке

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Выберите нужную позицию в левом поле, кликнув по ней, затем кликните в правом поле по выбранной вами позиции (протянется линия). Если хотите изменить ответ, нажмите на точку в любом из полей (линия исчезнет, и вы сможете провести новую).

Варианты:
After 1918 if you wanted to work you

In the nineteenth century parents often

A hundred years ago many people thought that girls

In Britain until 1870 children

Children of poor families needed to work so that they

There were 15,000 entries for competition so the reporter

One idea is for schools to have rockets so that students

Another idea is a school without uniforms where students

More computers are recommended so that students

An anti-bullying alarm is also suggested so that students and teachers

needn't have gone to school until they were ten years old.

won't all have to wear the same clothes.

were able to pay school fees.

didn't have to go to school.

will be able to study the stars and planets.

had to be twelve years old.

won't need to wait to use one.

will need to study more and more subjects.

needn't have worried.

will be able to take action before it starts.

weren’t able to pay school fees.

didn’t need to be educated.

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